The role of material characterisation in the crush modelling of thermoplastic composite structures

Tan, Wei; Falzon, Brian; Price, Mark; Liu, Haibao

doi:10.1016/j.compstruct.2016.07.011

Cited by 52 publications

(32 citation statements)

References 26 publications

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“…Bouvet et al [7,24] presented a model which captured the permanent indentation caused by low velocity/low energy impact, similar to that reported by Faggiani [21]. Recently, a computational model was developed by Tan et al [25][26][27] for predicting the material response of composite laminates under compressive, impact or crush loading. The intralaminar damage model, which accounts for physically-based failure mechanisms associated with the fibres and matrix, was implemented as a user subroutine in Abaqus/Explicit.…”

mentioning

confidence: 81%

Experimental and numerical studies on the impact response of damage-tolerant hybrid unidirectional/woven carbon-fibre reinforced composite laminates

Liu

Falzon

Tan

2018

Composites Part B: Engineering

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153

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A woven Five-Harness Satin (5HS) weave with AS4 carbon fibres, and unidirectional high strength IMS60 carbon fibres were used to manufacture hybrid laminates, using resin infusion, to assess their performance in low velocity impact tests. Load/energy-time curves and load-displacement curves were extracted from the experimental data, and non-destructive Cscanning was performed on all pre-and post-impacted specimens to quantify the extent of damage incurred. A finite element-based computational damage model was developed to predict the material response of these hybrid unidirectional/woven laminates. The intralaminar damage model formulation, by necessity, consists of two sub-models, a unidirectional constitutive model and a woven constitutive model. The built-in surface-based cohesive behaviour in Abaqus/Explicit was used to define the interlaminar damage model for capturing delamination. The reliability of this model was validated using in-house experimental data obtained from standard drop-weight impact tests. The simulated reactionforce and absorbed energy showed excellent agreement with experiment results. The post-impact delamination and permanent indentation deformation were also accurately captured. The accuracy of the damage model facilitated a quantitative comparison between the performance of a hybrid unidirectional/woven (U/W) laminates and a pure unidirectional (PU) carbon-fibre reinforced composite laminates of equivalent lay-up. The hybrid laminates were shown to yield better impact resistance.

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mentioning

confidence: 81%

Experimental and numerical studies on the impact response of damage-tolerant hybrid unidirectional/woven carbon-fibre reinforced composite laminates

Liu

Falzon

Tan

2018

Composites Part B: Engineering

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153

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“…It should also be mentioned that validation of the mesoscale model for impact and crush loading has been successfully conducted by the authors [1,2,11]. Extension to this multiscale modelling framework, where the composite laminates are homogenized as continuum shell elements for the modelling of large macroscale structures is not show in this paper, but is a natural extension to this work which would fit within current conventional modelling methods used in the aerospace industry.…”

Section: Mesoscale Modelmentioning

confidence: 98%

“…The predictive capability of CDM models to accurately capture the damage behaviour of composite structures relies on the acquisition of accurate material properties [11]. These input material parameters have to be obtained through experimental campaigns for individual material systems.…”

Section: Introductionmentioning

confidence: 99%

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

Tan

Naya

Yang

et al. 2018

Composites Part B: Engineering

105

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The development of the latest generation of wide-body passenger aircraft has heralded a new era in the utilisation of carbon-fibre composite materials. One of the primary challenges facing future development programmes is the desire to reduce the extent of physical testing, required as part of the certification process, by adopting a 'certification by simulation' approach. A hierarchical bottom-up multiscale simulation scheme can be an efficient approach that takes advantage of the natural separation of length scales between different entities 2 (fibre/matrix, ply, laminate and component) in composite structures. In this work, composites with various fibre/matrix and interlaminar interfacial properties were fabricated using an autoclave under curing pressures ranging from 0 to 0.8 MPa. The microstructure (mainly void content and spatial distribution) and the mechanical properties of the matrix and fibre/matrix interface were measured, the latter by means of nano-indentation tests in matrix pockets, and fibre push-in tests. In addition, the macroscopic interlaminar shear strength was determined by means of three-points bend tests on short beams. To understand the influence of interfacial properties on the intralaminar failure behaviour, a high-fidelity microscale computational model is presented to predict homogenized ply properties under shear loading. Predicted ply material parameters are then transferred to a mesoscale composite damage model to reveal the interaction between intralaminar and interlaminar damage behaviour of composite laminates.

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“…The input parameters, such as toughness and nonlinear properties, required for the computational model were extracted from a series of material characterisation tests reported in References [32,[41][42][43][44][45][46]. In details, the intralaminar fracture energies associated with fibre-dominated tensile ( ) and | compressive ( ) failure were measured using Modified Compact Tension (MCT) and Compact | Compression (CC) testing methods [30,47,48], respectively. The standard V-notched Rail Shear (VRS) testing method was used to obtain the nonlinear shear response of composite laminates [49].…”

Section: Materials Propertiesmentioning

confidence: 99%

Compressive failure of woven fabric reinforced thermoplastic composites with an open-hole: An experimental and numerical study

Liu

Falzon

et al. 2019

Composite Structures

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This research presents a detailed experimental and numerical study on the compressive failure of woven fabric reinforced thermoplastic composites, with an open-hole and with a pinned open-hole. The experimental evaluations are performed on the composite specimens using the Combined Loading Compression (CLC) evaluation method. Experimental results, including load response and damage morphology, are obtained and analysed. A meso-scale damage model is developed, based on Continuum-Damage-Mechanics (CDM), for predicting damage in woven fabric reinforced composites. The developed model, which can capture fibre fracture and matrix cracking, as well as the nonlinear response within the woven composite materials, is employed to conduct virtual Combined Loading Compression (CLC) tests. Numerical simulation results are compared with the extracted experimental results for model validation. Good correlation is achieved between experimental and computational results for both the open-hole and the pinned open-hole, with a twostage failure process being observed for the pinned open-hole.

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The role of material characterisation in the crush modelling of thermoplastic composite structures

Cited by 52 publications

References 26 publications

Experimental and numerical studies on the impact response of damage-tolerant hybrid unidirectional/woven carbon-fibre reinforced composite laminates

Experimental and numerical studies on the impact response of damage-tolerant hybrid unidirectional/woven carbon-fibre reinforced composite laminates

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

Compressive failure of woven fabric reinforced thermoplastic composites with an open-hole: An experimental and numerical study

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